The DRV8251A device is an integrated motor driver with N-channel H-bridge, charge pump, current sense feedback, current regulation, and protection circuitry. The charge pump improves efficiency by supporting N-channel MOSFET half bridges and 100% duty cycle driving.

An internal current mirror architecture on the IPROPI pin implements current sensing and regulation. This eliminates the need for a large power shunt resistor, saving board area and reducing system cost. The IPROPI current-sense output allows a microcontroller to detect motor stall or changes in load conditions. The external voltage reference pin, VREF, determines the threshold of current regulation during start-up and stall events without interaction from a microcontroller.

A low-power sleep mode achieves ultra-low quiescent current draw by shutting down most of the internal circuitry. Internal protection features include supply undervoltage lockout, output overcurrent, and device overtemperature.

The DRV8251A is part of a family of devices which come in pin-to-pin, scalable R_DS(on) and supply voltage options to support various loads and supply rails with minimal design changes. See Section 5 for information on the devices in this family. View the full portfolio of brushed motor drivers on ti.com.

• N-channel H-bridge brushed DC motor driver

• 4.5-V to 48-V operating supply voltage range

• Pin-to-pin, RDS(on), voltage, and current sense/regulation variants (external shunt resistor and integrated current mirror)

  • DRV8870: 6.5-V to 45-V, 565-mΩ, shunt

  • DRV8251: 4.5-V to 48-V, 450-mΩ, shunt

  • DRV8251A: 4.5-V to 48-V, 450-mΩ, mirror

  • DRV8231: 4.5-V to 33-V, 600-mΩ, shunt

  • DRV8231A: 4.5-V to 33-V, 600-mΩ, mirror

• High output current capability: 4.1-A Peak
• PWM control interface
• Supports 1.8-V, 3.3-V, and 5-V logic inputs
• Integrated IPROPI current sensing for stall detection and current regulation
• Low-power sleep mode
  • <1-μA at VVM = 24-V, TJ = 25°C
• Small package and footprint
  • 8-Pin HSOP with PowerPAD?, 4.9 × 6.0 mm
• Integrated protection features
  • VM undervoltage lockout (UVLO)
  • Auto-retry overcurrent protection (OCP)
  • Thermal shutdown (TSD)

• Number of full bridges
• 1
• Vs (Min) (V)
• 4.5
• Vs ABS (Max) (V)
• 50
• Peak output current (A)
• 4.1
• RDS(ON) (HS + LS) (mOhms)
• 450
• Sleep current (uA)
• 1
• Control mode
• PWM
• Control interface
• Hardware (GPIO)
• Features
• Current Regulation, Integrated Current Sensing, Low-Power Sleep Mode
• Rating
• Catalog
• Operating temperature range (C)
• -40 to 150

DRV8251A的完整型号有：DRV8251ADDAR，以下是这些产品的关键参数及官网采购报价：

DRV8251ADDAR，工作温度：-40 to 150，封装：SO PowerPAD (DDA)-8，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网DRV8251ADDAR的批量USD价格：.754（1000+）

DRV8251AEVM — DRV8251A 电机驱动器评估模块

DRV8251A 评估模块 (EVM) 可轻松评估 DRV8251A 器件。该 EVM 已被编程并配置为开箱即用，可用于立即开始旋转电机。

DRV8251A 是一款额定电压为 4.5V 至 48V 的单 H 桥驱动器，能够驱动高达 3.7A 的电流。该 EVM 可轻松控制 DRV8251A，无需使用 GUI。该 EVM 配备了两个电位计，可用于调节控制信号占空比。如果需要，可断开板载 MCU，以便 DRV8251A 可由外部控制器控制。